Improvement in grain-scourers



UNITED STATES PATENT OFF-Ion.

DAVID M. RICHARDSON, OF DETROIT, MICHIGAN.

IMPROVEMENT IN GRAlN-SCOURERS.

Specification forming part of Letters Patent No. 158,740, dated January I2, 1875; application filed December 11, 1874.

To all whom it may concern.-

Be it known that I, DAVID M. RICHARDSON, of Detroit, in the county of Wayne and State of Michigan, have invented an Improvement in Machines for (lleaning and Scouring Wheat,

of which the following is a specification:

The nature of this invention. relates to an improvement in the construction of grain cleaning and scouring machines, and is especially designed as an improvement in the construction of the machine for this purpose which was patented to Ephraim Russell, February 14,1871, No. 111,779, and also in the construction of the spiders as patented to me August 6, 1872, No. 130,315; and its object is the more effectually removing from the wheat-berries of the fuzz and chit at the ends thereof, without breakageor damage to the berry, than has heretofore been done.

Figure 1 is an elevation of one of the spiders, of which a series are used in a machine,

varying in number according to the difi'erent sizes of machines built. Fig. 2 is a perspective view of a portion of one of the arms.

In the drawing,A represents one of the spiders described in-said above-named Letters Patent, with the exception of the teeth and segments therein described, which I replace by the ratchet-faced segments a and the V- shaped and ratchet-faced spurs a, disposed on the blades of the arms, as shown in Fig. 1 in the accompanying drawing.

It is found in practice that the ratchet-faced segments and spurs will materially facilitate the removal of the fuzz and chit growing on the end of the berry, and in which the smutgerms gather.

In the'rotation of the spider the berries are deflected from the face of the spurs against the segments, and the movement reversed by being again deflected tothe next spur in succession, so that each end of the berry is presented alternately to the segments and the spurs, so that any adhering fuzz or chit is effectually removed from the berries. The ratchet-faces of the segments and spurs very materially assist to complete the process. The berry, being rapidly deflected from one series of segments to the other in succession, avoids all abrupt impingements which break and damage the berry, while at the same time the fuzz and chit are removed, and the berry is effectually scoured or polished Without in the least injuring the bran properties, which has been a great desideratum in the preparation of grain heretofore.

What I claim as my invention, and desire to secure by Letters Patent, is

The spider A, provided with the ratchetfaced segments a and the V-shaped and ratchet-faced spurs a, arranged as deseribed, and for the purposes set forth.

' DAVID M. RICHARDSON. Witnesses:

H. S. SPRAGUE, WM. P. SPALDING. 

